<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			*{
				margin: 0;
				padding: 0;
			}
		</style>
	</head>
	<body>
		<div style="height: 200px;line-height: 200px;background-color: pink;">
			atguigu
		</div>
	</body>
</html>
